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titleProject

Projecttitel: Progue

Status: 
Status
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title

in progress

finished

Startdate: 02/2021

Duedate: 03/2021

Manufacture link: https://jsisynth.com/products.html


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Description

PROGUE is a monophonic analog DIY synthesizer inspired by the two well-known vintage synthesizers: ROGUE and PRODIGY. While both of them had their pros and cons, the goal with the PROGUE was to combine their best qualities into a single portable tabletop synthesizer.

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titleSpecifications

OSCILLATORS

  • Two discrete oscillators with Sawtooth and Pulse waveforms
  • Pulse width and pulse width modulation
  • Hard sync: OSC2 to OSC1 with envelope control
  • Oscillators can be synced to Gate
  • OSC2 tuning: Interval and Beat (fine) amount
  • Pink noise generator

MIXER

  • OSC1 amount
  • OSC2 amount
  • Noise / External input amount

FILTERS

  • Four-pole (24db/oct) transistor ladder Low Pass Filter with resonant control
  • LPF can be driven to self-oscillation
  • Keyboard tracking amount
  • Independent passive High Pass Filter

ENVELOPES

  • Two ADS style envelopes for LPF and VCA

LFO / SAMPLE & HOLD

  • Triangle, Square and random waveforms
  • Rate, OSC amount, VCF amount
  • Midi modwheel / aftertouch to VCF / VCA / both

MIDI

  • Built-in 16-bit Midi to CV converter with 2 channel DAC
  • 1V/OCT and MOD amount (via mod wheel or aftertouch)
  • Poly-chain (for max. 5 units)

IN/OUT

  • Mono output (1/4" phone jack)
  • Headphones output (1/4" stereo phone jack)
  • Mono external input (1/4" phone jack)
  • CV input (1/4" phone jack)
  • GATE input (1/4" phone jack)
  • VCF CV input (1/4" phone jack)
  • Midi input and thru (5-pin DIN)

POWER

  • 12VDC (0.35A) power adapter (2.1mm DC jack)

DIMENSIONS

  • Enclosure 10" x 6" x 2" (254mm x 152.4mm x 50.8mm)



BOM:


PROGUE-REV-A-BOM.pdf (last version February 2020)


Digikey: https://www.digikey.fi/short/4720z1

...

LM393D should be 511-LM393ADT



alpha 9mm not in card available from UK-elektronik
2x C1M
1x C50K

Guide:

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IDdateissuesolutionfixed in production version
126.1.2021

info-

ribbon cable

its cheaper 15cm is fine

NEVER use Floppy disk cables - this are not 1:1 pin assigned


2INFOic pin out

DAC and LDO is upside down, all other pin1 top-left

or check dadatsheet


3

C95A is C15A1

C95B is C15B1 on pcbs


(tick)
426.1bom change (last version is A)

R210 was 1k5 now 1k (SMT led resistor)

C95a1 and C95b1 changed to: C95A and C95B

 added one dip8 socket to bom

(tick)
526.1

install S7 at the end of the build - for prototype version only !!!



(tick)
606.02-2021check that no traces are under the slide switch tabs, and check for traces under the potentiometer tabs.bend or cut them. ( Janne agreed that he change the pcb - production run don't have traces under the switch tabs and pot tabs) unknown

My Build:

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